Can I run a Passive Speaker without an amplifier?

Joson asked Oct 16,2020
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Can I connect a 0.5W Speaker direct to an input (Raspberry pi in my case) and expect it to be as loud as a let's say a phone speaker? Will a very small speaker work directly from an input? If not which low powered amplifier would you recommend in my case where I don't have much space to spare for.

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    This is very similar to the question asked here: https://www.pcbway.com/project/question/If_it_is_possible_to_directly_connect_some_low_power_speaker_to_the_gpio_pins_of_the_rpi4_.html The LM386 is the old "tried & true" low power amplifier. https://www.electroschematics.com/lm386-audio-amplifier/ But there are definitely newer options available. https://www.adafruit.com/product/2130

    Oct 16,20201 Comments
    Joson 2020-10-23 09:47:37Reply

    It seems that LM386 worth a try. I hope it is loud enough. thanks

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  • 0

    As Iridium said, there are amplifiers... another one I'd recommend, is a Maxim one... they have 2 headphone sensing ones, MAX9716/9717 I believe.

    Oct 18,20200 Comments
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